appmodule for poedit #1811

Reported by MHameed on 2011-09-18 20:46
Prep work for #1410 and #1524.
Translators can easely localize messages using poedit, but can currently not read comments, either inserted by other translators or automatically extracted from code.
The attached appmodule adds two shortcuts, control+shift+c for reading translation comments, and control+shift+a for reading automatically extracted comments.

Also labels some edit fields.

comment 1:
Might it be useful if getPath and fetchObject moved into api.py?
Maybe they can be reused by other app modules?
They may cause a watchdog timeout, but an app module developer at least has another quick strategy for his/her app.

comment 2:
the ui.messages should probably be localized, but are provided as is for testing purposes.

Thank you for your time.